I enjoyed this episode slightly more than usual.
Basically because of my "Trek Quest". For those who don't know, to ensure that I have seen every single episode, I have been rewatching all of Star Trek starting at the beginning. This I started around the time I signed up to the forum.
I don't want to Trek myself out, and so I will steadily work through a season and then watch a couple of other TV show Seasons such as a Classic Doctor Who and a Smallville before going back to Trek.
It just so happens that a few days before listening to this episoe, I had watched "The First Duty". Having recently watched the episode really does enhance the listening pleasure. So, cheers for that Rico